Water trough



FIG. 1 is a top plan view of a water trough showing my design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top, rear, right perspective view thereof;

FIG. 8 is a top, front, right perspective view thereof; and,

FIG. 9 is a cross-sectional view thereof taken along line 9-9 in FIG. 1, to better illustrate certain external aspects of the design. 

CLAIM I claim the ornamental design for a water trough, as shown and described. 